Former president Jacob Zuma and the French arms manufacturer Thales Group will resume in the Pietermaritzburg High Court on Monday.
The trial will be heard virtually, and will begin at 10am, the National Prosecuting Authority (NPA) confirmed in a statement on Friday.
Zuma and Thales will be on trial regarding a controversial multibillion-rand arms deal dating back to the 1990s.
Zuma faces 18 charges and 783 counts related to the case, including fraud, corruption, money laundering and racketeering, while Thales faces four charges.
His team said Downer smeared Zuma’s name, and leaked information related to the corruption case to the media.
Zuma wants to be acquitted of all charges, should his affidavit against Downer succeed.
Compiled by Nica Richards. Additional reporting by Thapelo Lekabe.